Merge commit 'origin/gallium-0.1' into gallium-0.1

Conflicts:

	src/gallium/drivers/softpipe/sp_quad_fs.c
	src/gallium/drivers/softpipe/sp_state.h
	src/gallium/drivers/softpipe/sp_state_fs.c

1 files changed, 377 insertions, 0 deletions

diff --git a/src/gallium/winsys/xlib/xfonts.c b/src/gallium/winsys/xlib/xfonts.c
new file mode 100644
index 00000000000..d72c600bd1b
--- /dev/null
+++ b/src/gallium/winsys/xlib/xfonts.c
@@ -0,0 +1,377 @@
+
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.5
+ *
+ * Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/* xfonts.c -- glXUseXFont() for Mesa written by
+ * Copyright (C) 1995 Thorsten.Ohl @ Physik.TH-Darmstadt.de
+ */
+
+#ifdef __VMS
+#include <GL/vms_x_fix.h>
+#endif
+
+#include "glxheader.h"
+#include "context.h"
+#include "imports.h"
+#include "xfonts.h"
+
+
+/* Some debugging info.  */
+
+#ifdef DEBUG
+#undef _R
+#undef _G
+#undef _B
+#include <ctype.h>
+
+int debug_xfonts = 0;
+
+static void
+dump_char_struct(XCharStruct * ch, char *prefix)
+{
+   printf("%slbearing = %d, rbearing = %d, width = %d\n",
+	  prefix, ch->lbearing, ch->rbearing, ch->width);
+   printf("%sascent = %d, descent = %d, attributes = %u\n",
+	  prefix, ch->ascent, ch->descent, (unsigned int) ch->attributes);
+}
+
+static void
+dump_font_struct(XFontStruct * font)
+{
+   printf("ascent = %d, descent = %d\n", font->ascent, font->descent);
+   printf("char_or_byte2 = (%u,%u)\n",
+	  font->min_char_or_byte2, font->max_char_or_byte2);
+   printf("byte1 = (%u,%u)\n", font->min_byte1, font->max_byte1);
+   printf("all_chars_exist = %s\n", font->all_chars_exist ? "True" : "False");
+   printf("default_char = %c (\\%03o)\n",
+	  (char) (isprint(font->default_char) ? font->default_char : ' '),
+	  font->default_char);
+   dump_char_struct(&font->min_bounds, "min> ");
+   dump_char_struct(&font->max_bounds, "max> ");
+#if 0
+   for (c = font->min_char_or_byte2; c <= font->max_char_or_byte2; c++) {
+      char prefix[8];
+      sprintf(prefix, "%d> ", c);
+      dump_char_struct(&font->per_char[c], prefix);
+   }
+#endif
+}
+
+static void
+dump_bitmap(unsigned int width, unsigned int height, GLubyte * bitmap)
+{
+   unsigned int x, y;
+
+   printf("    ");
+   for (x = 0; x < 8 * width; x++)
+      printf("%o", 7 - (x % 8));
+   putchar('\n');
+   for (y = 0; y < height; y++) {
+      printf("%3o:", y);
+      for (x = 0; x < 8 * width; x++)
+	 putchar((bitmap[width * (height - y - 1) + x / 8] & (1 << (7 - (x %
+									 8))))
+		 ? '*' : '.');
+      printf("   ");
+      for (x = 0; x < width; x++)
+	 printf("0x%02x, ", bitmap[width * (height - y - 1) + x]);
+      putchar('\n');
+   }
+}
+#endif /* DEBUG */
+
+
+/* Implementation.  */
+
+/* Fill a BITMAP with a character C from thew current font
+   in the graphics context GC.  WIDTH is the width in bytes
+   and HEIGHT is the height in bits.
+
+   Note that the generated bitmaps must be used with
+
+        glPixelStorei (GL_UNPACK_SWAP_BYTES, GL_FALSE);
+        glPixelStorei (GL_UNPACK_LSB_FIRST, GL_FALSE);
+        glPixelStorei (GL_UNPACK_ROW_LENGTH, 0);
+        glPixelStorei (GL_UNPACK_SKIP_ROWS, 0);
+        glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0);
+        glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
+
+   Possible optimizations:
+
+     * use only one reusable pixmap with the maximum dimensions.
+     * draw the entire font into a single pixmap (careful with
+       proportional fonts!).
+*/
+
+
+/*
+ * Generate OpenGL-compatible bitmap.
+ */
+static void
+fill_bitmap(Display * dpy, Window win, GC gc,
+	    unsigned int width, unsigned int height,
+	    int x0, int y0, unsigned int c, GLubyte * bitmap)
+{
+   XImage *image;
+   unsigned int x, y;
+   Pixmap pixmap;
+   XChar2b char2b;
+
+   pixmap = XCreatePixmap(dpy, win, 8 * width, height, 1);
+   XSetForeground(dpy, gc, 0);
+   XFillRectangle(dpy, pixmap, gc, 0, 0, 8 * width, height);
+   XSetForeground(dpy, gc, 1);
+
+   char2b.byte1 = (c >> 8) & 0xff;
+   char2b.byte2 = (c & 0xff);
+
+   XDrawString16(dpy, pixmap, gc, x0, y0, &char2b, 1);
+
+   image = XGetImage(dpy, pixmap, 0, 0, 8 * width, height, 1, XYPixmap);
+   if (image) {
+      /* Fill the bitmap (X11 and OpenGL are upside down wrt each other).  */
+      for (y = 0; y < height; y++)
+	 for (x = 0; x < 8 * width; x++)
+	    if (XGetPixel(image, x, y))
+	       bitmap[width * (height - y - 1) + x / 8] |=
+		  (1 << (7 - (x % 8)));
+      XDestroyImage(image);
+   }
+
+   XFreePixmap(dpy, pixmap);
+}
+
+/*
+ * determine if a given glyph is valid and return the
+ * corresponding XCharStruct.
+ */
+static XCharStruct *
+isvalid(XFontStruct * fs, unsigned int which)
+{
+   unsigned int rows, pages;
+   unsigned int byte1 = 0, byte2 = 0;
+   int i, valid = 1;
+
+   rows = fs->max_byte1 - fs->min_byte1 + 1;
+   pages = fs->max_char_or_byte2 - fs->min_char_or_byte2 + 1;
+
+   if (rows == 1) {
+      /* "linear" fonts */
+      if ((fs->min_char_or_byte2 > which) || (fs->max_char_or_byte2 < which))
+	 valid = 0;
+   }
+   else {
+      /* "matrix" fonts */
+      byte2 = which & 0xff;
+      byte1 = which >> 8;
+      if ((fs->min_char_or_byte2 > byte2) ||
+	  (fs->max_char_or_byte2 < byte2) ||
+	  (fs->min_byte1 > byte1) || (fs->max_byte1 < byte1))
+	 valid = 0;
+   }
+
+   if (valid) {
+      if (fs->per_char) {
+	 if (rows == 1) {
+	    /* "linear" fonts */
+	    return (fs->per_char + (which - fs->min_char_or_byte2));
+	 }
+	 else {
+	    /* "matrix" fonts */
+	    i = ((byte1 - fs->min_byte1) * pages) +
+	       (byte2 - fs->min_char_or_byte2);
+	    return (fs->per_char + i);
+	 }
+      }
+      else {
+	 return (&fs->min_bounds);
+      }
+   }
+   return (NULL);
+}
+
+
+void
+Fake_glXUseXFont(Font font, int first, int count, int listbase)
+{
+   Display *dpy;
+   Window win;
+   Pixmap pixmap;
+   GC gc;
+   XGCValues values;
+   unsigned long valuemask;
+   XFontStruct *fs;
+   GLint swapbytes, lsbfirst, rowlength;
+   GLint skiprows, skippixels, alignment;
+   unsigned int max_width, max_height, max_bm_width, max_bm_height;
+   GLubyte *bm;
+   int i;
+
+   dpy = glXGetCurrentDisplay();
+   if (!dpy)
+      return;			/* I guess glXMakeCurrent wasn't called */
+   win = RootWindow(dpy, DefaultScreen(dpy));
+
+   fs = XQueryFont(dpy, font);
+   if (!fs) {
+      _mesa_error(NULL, GL_INVALID_VALUE,
+		  "Couldn't get font structure information");
+      return;
+   }
+
+   /* Allocate a bitmap that can fit all characters.  */
+   max_width = fs->max_bounds.rbearing - fs->min_bounds.lbearing;
+   max_height = fs->max_bounds.ascent + fs->max_bounds.descent;
+   max_bm_width = (max_width + 7) / 8;
+   max_bm_height = max_height;
+
+   bm = (GLubyte *) MALLOC((max_bm_width * max_bm_height) * sizeof(GLubyte));
+   if (!bm) {
+      XFreeFontInfo(NULL, fs, 1);
+      _mesa_error(NULL, GL_OUT_OF_MEMORY,
+		  "Couldn't allocate bitmap in glXUseXFont()");
+      return;
+   }
+
+#if 0
+   /* get the page info */
+   pages = fs->max_char_or_byte2 - fs->min_char_or_byte2 + 1;
+   firstchar = (fs->min_byte1 << 8) + fs->min_char_or_byte2;
+   lastchar = (fs->max_byte1 << 8) + fs->max_char_or_byte2;
+   rows = fs->max_byte1 - fs->min_byte1 + 1;
+   unsigned int first_char, last_char, pages, rows;
+#endif
+
+   /* Save the current packing mode for bitmaps.  */
+   glGetIntegerv(GL_UNPACK_SWAP_BYTES, &swapbytes);
+   glGetIntegerv(GL_UNPACK_LSB_FIRST, &lsbfirst);
+   glGetIntegerv(GL_UNPACK_ROW_LENGTH, &rowlength);
+   glGetIntegerv(GL_UNPACK_SKIP_ROWS, &skiprows);
+   glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &skippixels);
+   glGetIntegerv(GL_UNPACK_ALIGNMENT, &alignment);
+
+   /* Enforce a standard packing mode which is compatible with
+      fill_bitmap() from above.  This is actually the default mode,
+      except for the (non)alignment.  */
+   glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE);
+   glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
+   glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+   glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
+   glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+   pixmap = XCreatePixmap(dpy, win, 10, 10, 1);
+   values.foreground = BlackPixel(dpy, DefaultScreen(dpy));
+   values.background = WhitePixel(dpy, DefaultScreen(dpy));
+   values.font = fs->fid;
+   valuemask = GCForeground | GCBackground | GCFont;
+   gc = XCreateGC(dpy, pixmap, valuemask, &values);
+   XFreePixmap(dpy, pixmap);
+
+#ifdef DEBUG
+   if (debug_xfonts)
+      dump_font_struct(fs);
+#endif
+
+   for (i = 0; i < count; i++) {
+      unsigned int width, height, bm_width, bm_height;
+      GLfloat x0, y0, dx, dy;
+      XCharStruct *ch;
+      int x, y;
+      unsigned int c = first + i;
+      int list = listbase + i;
+      int valid;
+
+      /* check on index validity and get the bounds */
+      ch = isvalid(fs, c);
+      if (!ch) {
+	 ch = &fs->max_bounds;
+	 valid = 0;
+      }
+      else {
+	 valid = 1;
+      }
+
+#ifdef DEBUG
+      if (debug_xfonts) {
+	 char s[7];
+	 sprintf(s, isprint(c) ? "%c> " : "\\%03o> ", c);
+	 dump_char_struct(ch, s);
+      }
+#endif
+
+      /* glBitmap()' parameters:
+         straight from the glXUseXFont(3) manpage.  */
+      width = ch->rbearing - ch->lbearing;
+      height = ch->ascent + ch->descent;
+      x0 = -ch->lbearing;
+      y0 = ch->descent - 0;	/* XXX used to subtract 1 here */
+      /* but that caused a conformace failure */
+      dx = ch->width;
+      dy = 0;
+
+      /* X11's starting point.  */
+      x = -ch->lbearing;
+      y = ch->ascent;
+
+      /* Round the width to a multiple of eight.  We will use this also
+         for the pixmap for capturing the X11 font.  This is slightly
+         inefficient, but it makes the OpenGL part real easy.  */
+      bm_width = (width + 7) / 8;
+      bm_height = height;
+
+      glNewList(list, GL_COMPILE);
+      if (valid && (bm_width > 0) && (bm_height > 0)) {
+
+	 MEMSET(bm, '\0', bm_width * bm_height);
+	 fill_bitmap(dpy, win, gc, bm_width, bm_height, x, y, c, bm);
+
+	 glBitmap(width, height, x0, y0, dx, dy, bm);
+#ifdef DEBUG
+	 if (debug_xfonts) {
+	    printf("width/height = %u/%u\n", width, height);
+	    printf("bm_width/bm_height = %u/%u\n", bm_width, bm_height);
+	    dump_bitmap(bm_width, bm_height, bm);
+	 }
+#endif
+      }
+      else {
+	 glBitmap(0, 0, 0.0, 0.0, dx, dy, NULL);
+      }
+      glEndList();
+   }
+
+   FREE(bm);
+   XFreeFontInfo(NULL, fs, 1);
+   XFreeGC(dpy, gc);
+
+   /* Restore saved packing modes.  */
+   glPixelStorei(GL_UNPACK_SWAP_BYTES, swapbytes);
+   glPixelStorei(GL_UNPACK_LSB_FIRST, lsbfirst);
+   glPixelStorei(GL_UNPACK_ROW_LENGTH, rowlength);
+   glPixelStorei(GL_UNPACK_SKIP_ROWS, skiprows);
+   glPixelStorei(GL_UNPACK_SKIP_PIXELS, skippixels);
+   glPixelStorei(GL_UNPACK_ALIGNMENT, alignment);
+}